In principle it's a good idea. There is a problem with this particular set, though. The icons are represented by ordinary characters like "A", which is confusing for users without webfonts, or on screenreaders. Some of this can be fixed by remapping the font to more appropriate characters, but you may not want to go to that much trouble.
any reasonably complete unicode font should already include many of those glyphs. for the glyphs that aren't in the unicode standard, there are private use areas that could accommodate them.
